> For the complete documentation index, see [llms.txt](https://docs.acho.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.acho.io/acho-studio/data-prep-projects/applying-actions/view/hide-columns.md).

# Hide Columns

The **`Hide Columns`** action is particularly useful when you have a large table with many columns, but you only need to use a few. Columns that are hidden are no longer considered for transformation, but they are not deleted, you can either unhide them or reset the action to make them visible again.

![](https://3574406564-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MB_fx7PCUqvFEdrucJC%2F-McFJyc5xkFFTDS7bd70%2F-McFMoP-2PqTQciqwwoz%2FImage_extra%20487.png?alt=media\&token=76c87a2b-1496-4915-9e39-46da2cb21bf5)